Your search for "office 2013 home and business download iso offline installer free" is understandable, but it carries significant risk. Legitimate offline installers are only available to verified license holders through their Microsoft account. Downloading "free" versions from elsewhere exposes you to malware in an unsupported, unpatched software environment. To ensure your system's safety, your best course of action is to either or, ideally, upgrade to a supported, modern alternative like Microsoft 365 (via free trial) or a free suite like LibreOffice.
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The installer will begin. Since it is an offline version, it will not ask to download additional files. upgrade to a supported